Bump thiserror from 1.0.6 to 1.0.9

[dependabot-preview]

Bumps thiserror from 1.0.6 to 1.0.9.

Release notes

Sourced from thiserror's releases.

1.0.8

• Documentation improvements

1.0.7

• Support mixing shorthand and non-shorthand format args (#47)

  #[derive(Error, Debug)]
  pub enum Error {
      #[error("first letter must be lowercase but was {:?}", first_char(.0))]
      WrongCase(String),
      #[error("invalid index {idx}, expected at least {} and at most {}", .limits.lo, .limits.hi)]
      OutOfBounds { idx: usize, limits: Limits },
  }

• Add #[error(transparent)] attribute for delegating Error impl to one field (#50)

  This is useful for hiding error variants from a library's public error type:

  #[derive(Error, Debug)]
  #[error(transparent)]  // source and Display delegate to ErrorKind
  pub struct Error(ErrorKind);
  
  #[derive(Error, Debug)]
  /*private*/ enum ErrorKind {
      #[error("...")]
      E0,
      #[error("...")]
      E1(#[source] io::Error),
  }

  And also for enums that need an "anything else" variant; such variants tend not to have their own Display message but just forward through to the underlying error's Display and source:

  #[derive(Error, Debug)]
  pub enum MyError {
      ...
  
      #[error(transparent)]
      Other(#[from] anyhow::Error),  // source and Display delegate to anyhow::Error
  }

Commits

• 1d0b399 Release 1.0.9
• 20202db Remove incorrect detection of simple fmt cases
• d53be52 Release 1.0.8
• 26a5af1 Update documentation of display attr
• 79b740e Release 1.0.7
• 05f0a0f Add trybuild tests for transparent feature
• 62e8e66 Merge pull request #50 from dtolnay/transparent
• ac61f40 Test transparent attribute
• c3da163 Expand transparent attribute
• 7672b1e Validate transparent attribute
• Additional commits viewable in compare view

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[dependabot-preview]

Looks like thiserror is up-to-date now, so this is no longer needed.